public Command(ImmutableArray <string> literals,
string description,
IArgBinder <IEntryPoint> binder)
{
Literals = literals;
Binder = binder;
Description = description;
}
public static Task <int> RunAsync(string[] args, IArgBinder <IEntryPoint> binder)
{
var(entryPoint, tail) = binder.Bind(args);
switch (entryPoint.Mode)
{
case EntryPointMode.ShowHelp:
binder.Describe(Console.Out);
return(Task.FromResult(0));
default:
return(entryPoint.Main(tail));
}
}
public static Task <int> RunAsync(IEnumerable <string> args, IArgBinder <IEntryPoint> @default, params Command[] commands)
{
using var arg = args.GetEnumerator();
if (!arg.MoveNext())
{
foreach (var command in commands)
{
Console.WriteLine(string.Join(" ", command.Literals));
}
return(Task.FromResult(0));
}
var(count, binder) =
commands.OrderByDescending(cmd => cmd.Literals.Length)
.Where(cmd => cmd.Literals.SequenceEqual(args.Take(cmd.Literals.Length)))
.Select(cmd => (cmd.Literals.Length, cmd.Binder))
.DefaultIfEmpty((0, @default))
.First();
return(RunAsync(args.Skip(count).ToArray(), binder));
}
Bind <T>(this IArgBinder <T> binder, params string[] args) =>
public static int Run(IEnumerable <string> args, IArgBinder <IEntryPoint> @default, params Command[] commands) => RunAsync(args, @default, commands).GetAwaiter().GetResult();
public static Command Command(string name, IArgBinder <IEntryPoint> binder) => new Command(ImmutableArray.Create(name.Split((char[])null, StringSplitOptions.RemoveEmptyEntries)), null, binder);
public static int Run(string[] args, IArgBinder <IEntryPoint> binder) => RunAsync(args, binder).GetAwaiter().GetResult();
public static IArgBinder <(T, U)> Zip <T, U>(this IArgBinder <T> first, IArgBinder <U> second) =>
